Pilar Calvo
type: MusicGroup
description: For the Spanish sculptor, see Pilar Calvo Rodero. Maria Pilar Calvo i Gómez (born 3 May 1963) is a Spanish journalist, politician and a member of the Congress of Deputies of Spain. Early life Calvo
popularity: 7
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x53e6e176ce5d92544391c563d9b2495fabccfb7c0f4f4e9b34ff2a1ca7fec0b5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953895
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953895
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0eb9fa5f-b8e6-4cc7-8cd8-5b39df912389.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0eb9fa5f-b8e6-4cc7-8cd8-5b39df912389.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0eb9fa5f-b8e6-4cc7-8cd8-5b39df912389
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T05:46:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x53e6e176ce5d92544391c563d9b2495fabccfb7c0f4f4e9b34ff2a1ca7fec0b5","name":"Pilar Calvo","registered_at":"2026-06-15T18:44:50Z","symbol":"NIM0798194","token_address":"0xdf704e98e0fd0b2bd9155433585cc07e89df2541","type":"artist","uuid":"0eb9fa5f-b8e6-4cc7-8cd8-5b39df912389"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e6e176ce5d92544391c563d9b2495fabccfb7c0f4f4e9b34ff2a1ca7fec0b5. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0eb9fa5f-b8e6-4cc7-8cd8-5b39df912389.json and https://artists.proofprofile.net/proofs/artist/0eb9fa5f-b8e6-4cc7-8cd8-5b39df912389.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x53e6e176ce5d92544391c563d9b2495fabccfb7c0f4f4e9b34ff2a1ca7fec0b5","name":"Pilar Calvo","registered_at":"2026-06-15T18:44:50Z","symbol":"NIM0798194","token_address":"0xdf704e98e0fd0b2bd9155433585cc07e89df2541","type":"artist","uuid":"0eb9fa5f-b8e6-4cc7-8cd8-5b39df912389"}